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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22f032f63a140c1837c532002fce02a0e04a0462586e48573cce94c5c4a59acd' 
  AND token = 'D5AoL4FU3c/XDWI/JgW/UyJ3hGua0NzQlHz5r1LET7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}